feat: allow user to import their own themes (#17)

* feat: allow user to import their own themes

* refactor: use make to create map

* add catppuccin example

* fix: theme importing should before reading config file

* docs: add create theme in README

* docs: style

README.md

@@ -48,6 +48,20 @@ go install github.com/eeeXun/gtt@latest
 docker run -it eeexun/gtt
 ```
 
+## Create a theme
+
+You can create a theme with theme name. And you must provide the color of `bg`, `fg`, `gray`, `red`, `green`, `yellow`, `blue`, `purple`, `cyan`, `orange`.
+
+And note that:
+
+- `bg` is for background color
+- `fg` is for foreground color
+- `gray` is for selected color
+- `yellow` is for label color
+- `orange` is for KeyMap menu color
+
+See the example in [theme.yaml](example/theme.yaml) file. This file should located under `$XDG_CONFIG_HOME/gtt/theme.yaml` or `$HOME/.config/gtt/theme.yaml`
+
 ## Language in argument
 
 You can pass `-src` and `-dst` in argument to set source and destination language.

config.go

@@ -13,6 +13,7 @@ import (
 func configInit() {
 	var (
 		defaultConfigPath string
+		themeConfig       = config.New()
 		defaultConfig     = map[string]interface{}{
 			"hide_below":                    false,
 			"transparent":                   false,
@@ -37,14 +38,31 @@ func configInit() {
 
 	config.SetConfigName("gtt")
 	config.SetConfigType("yaml")
+	themeConfig.SetConfigName("theme")
+	themeConfig.SetConfigType("yaml")
 	if len(os.Getenv("XDG_CONFIG_HOME")) > 0 {
 		defaultConfigPath = os.Getenv("XDG_CONFIG_HOME") + "/gtt"
 		config.AddConfigPath(defaultConfigPath)
+		themeConfig.AddConfigPath(defaultConfigPath)
 	} else {
 		defaultConfigPath = os.Getenv("HOME") + "/.config/gtt"
 	}
 	config.AddConfigPath("$HOME/.config/gtt")
+	themeConfig.AddConfigPath("$HOME/.config/gtt")
 
+	// import theme if file exists
+	if err := themeConfig.ReadInConfig(); err == nil {
+		var (
+			palate = make(map[string]int32)
+			colors = []string{"bg", "fg", "gray", "red", "green", "yellow", "blue", "purple", "cyan", "orange"}
+		)
+		for name := range themeConfig.AllSettings() {
+			for _, color := range colors {
+				palate[color] = themeConfig.GetInt32(fmt.Sprintf("%s.%s", name, color))
+			}
+			style.NewTheme(name, palate)
+		}
+	}
 	// Create config file if it does not exist
 	// Otherwise check if config value is missing
 	if err := config.ReadInConfig(); err != nil {

example/theme.yaml

@@ -0,0 +1,30 @@
+# This file should located under $XDG_CONFIG_HOME/gtt/theme.yaml or $HOME/.config/gtt/theme.yaml
+# You have to provide theme name. e.g. tokyonight
+# And colors: bg, fg, gray, red, green, yellow, blue, purple, cyan, orange
+# bg is for background color
+# fg is for foreground color
+# gray is for selected color
+# yellow is for label color
+# orange is for KeyMap menu color
+tokyonight:
+  bg: 0x1a1b26
+  fg: 0xc0caf5
+  gray: 0x414868
+  red: 0xf7768e
+  green: 0x9ece6a
+  yellow: 0xe0af68
+  blue: 0x7aa2f7
+  purple: 0xbb9af7
+  cyan: 0x7dcfff
+  orange: 0xff9e64
+catppuccin:
+  bg: 0x24273A
+  fg: 0xCAD3F5
+  gray: 0x5B6078
+  red: 0xED8796
+  green: 0xA6DA95
+  yellow: 0xEED49F
+  blue: 0x8AADF4
+  purple: 0xF5BDE6
+  cyan: 0x8BD5CA
+  orange: 0xF5A97F

internal/style/color.go

@@ -34,3 +34,11 @@ var (
 		},
 	}
 )
+
+func NewTheme(name string, palette map[string]int32) {
+	AllTheme = append(AllTheme, name)
+	themes[name] = make(map[string]tcell.Color)
+	for color, rgb := range palette {
+		themes[name][color] = tcell.NewHexColor(rgb)
+	}
+}